Real-time data collection

PUE and DCiE monitoring

By measuring power at key areas coming into a facility means there are many valuable readings that provide important additional information.

What is PUE and DCiE?

PUE (Power Usage Effectiveness) and DCiE (Data Centre infrastructure Effectiveness) are industry standard efficiency benchmarks comparing the overall energy used for a data centers infrastructure versus its energy used for its existing IT load.

By measuring PUE and DCiE presents an efficiency score and sets a testing framework for the data center to repeat and compare. By continually comparing scores, data center managers can verify the impact of what should be the focus of their ongoing efficiency efforts in order to gain greater cost savings and efficiencies in the future.

At any given time, they are comparing the power currently used for the IT equipment needs with the power used by the infrastructure as a whole which keeps that IT equipment cooled, powered, backed-up and protected.

PUE DCiE Level of efficiency
3.0 33% Very inefficient
2.5 40% Inefficient
2.0 50% Average
1.5 67% Efficient
1.2 83% Very efficient

The benefits of PUE and DCiE monitoring

Knowing what the efficiency figures are in real-time is allows users to highlight areas for improvement in order to to achieve better ratings over time.

The objective is to ensure that the maximum possible percentage of power utilised in a data center is actually used by IT equipment and the minimum by supporting equipment such as AC units and other peripheral equipment.

Understanding PUE and DCiE is only the beginning. Efficiency gains should be regularly calculated, preferably in real time. By doing this users can check how well they are doing on different days of the week, month and year. This is particularly important as it identifies equipment overheads that may be missed if the measurements are made infrequently.

Perpetuity of data

Spook retains all PUE and DCiE readings in perpetuity so users can study trends for efficiency more accurately. The results can easily be exported in OmniWatch on-demand reports.

PUE and DCiE calculator

Total facility energy

Enter in the total amount of energy your facility is using (kW)

kW

Total IT equipment energy

Enter the total amount of energy your IT equipment is using (kW)

kW
  • PUE

  • 1.25

  • DCiE

  • 80%

  • Efficient

  • 0/100
Power consumption comparison

Power consumption fluctuations

Total electrical power consumed by IT equipment in data centres has been relatively stable historically, but new designs for server processors include energy management capabilities that can result in substantial power consumption fluctuations.

This can present potentially numerous problems, including overheating, overloading a circuit breaker and loss of redundancy.

Computational loads

Typically servers operate at light computational loads, with actual power draw amounting to less than the server's potential maximum power draw capabilities.

However, because many IT personnel can be unaware of this discrepancy, it's easy to plug more servers than are necessary into a single power circuit.

This in turn creates the potential for possible circuit overloads, as the circuit rating can be exceeded by the total maximum server power consumption.

Circuit overloading

Another complication is that when servers are simultaneously subjected to heavy loads, circuit overloads will occur. When circuits are overloaded, the entire circuit can be tripped and power shut off to IT equipment.

Furthermore, since this happens as a result of heavy loads, power outages at this time can have significant negative effects on business.

Spook is an approved Endorser of the European Code of Conduct for Data Centres

The Data Centres Energy Efficiency Code of Conduct was established some years ago in response to increasing energy consumption in data centers and the need to reduce the related environmental, economic and energy supplies.

The aim is to inform and stimulate data center operators and owners to reduce energy consumption in a cost-effective manner without impacting the mission critical function of data center facility. The Code of Conduct aims to achieve this by improving the understanding of energy demand within the data center, raising awareness and recommending energy efficient best practice and targets.The Code of Conduct aims to achieve this by improving the understanding of energy demand within the data center, raising awareness and recommending energy efficient best practice and targets.

European Code of Conduct for Data Centers
Capita

We had a requirement to improve on the accuracy and time way we calculated the PUE (Power Efficiency) of our separate data centres in Kent and Essex. The relevant data was available on various (Schneider) power meters located around the data centres but it was a laborious task to manually collect the data in-order to calculate matters. Spook OmniWatch continually monitors our key power metrics and we are now in a position to become more energy efficient and to reduce our carbon footprint.

We had a requirement to improve on the accuracy and time way we calculated the PUE (Power Efficiency) of our separate data centres in Kent and Essex. The relevant data was available on various (Schneider) power meters located around the data centres but it was a laborious task to manually collect the data in-order to calculate matters. Spook OmniWatch continually monitors our key power metrics and we are now in a position to become more energy efficient and to reduce our carbon footprint.

Capita Business Services - An international business outsourcing company.

Spook monitors a wide range of power devices

Generators

Maintaining power security.

PDUs

Analysing equipment power consumption.

PUE and DCiE

Measuring power efficiency.

UPSs

Managing back-up power.

Get in touch with Spook

Please contact us if you wish for further information on how Spook can help with your environmental and power monitoring needs.

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